US4195009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating system
Assignee: Individual
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Filing: 1977-11-14
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Granted: 1980-03-25
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Expires: 1997-11-14
Abstract
Abstract A system adapted for the application of a moisture-proof barrier to a substrate. The system comprises a liquid rubber precursor formulation and an isocyanate formulation which are adapted for mixing to provide a reactive mixture for application to the substrate. The liquid rubber precursor includes a hydroxyl terminated butadiene polymer, a polyether triol, an organo-mercury catalyst, carbon black, a low oil absorbency silica, a suspending agent for the silica, a molecular sieve dessicant, a limited proportion of an organic solvent, and lecithin in an amount sufficient to provide a formulation viscosity of not greater than about 20,000 cps at 27° C. The second formulation contains a urethane prepolymer derived from a polypropylene glycol ether polyol and toluene diisocyanate, containing between about 13 and about 17% by weight free isocyanate groups.
Inventors
- 👤 Robert A. Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:18
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/67; C08G18/69; C08G18/698; C08L; C08L75/00; C08L75/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
138 words
An aluminum base liquid rubber precursor formulation adapted for reaction with a second formulation containing isocyanate groups to provide a heat reflective moisture-proof barrier for a substrate, said liquid rubber precursor formulation comprising between about 22 and about 56% by weight of a hydroxyl terminated butadiene polymer, between about 5 and about 30% by weight of a polyether triol having a hydroxyl number of between about 300 and about 500, between about 10 and about 46% by weight particulate aluminum, between about 0.4 and about 6% by weight of a molecular seive dessicant, between about 0.1 and about 1.5% by weight of a mercury catalyst, up to about 4% by weight of a silicon resin, and up to 40% by weight of an organic solvent selected from the group consisting of aromatic solvents, ketones, esters and glycol ethers.
Claim 2
Dependent Claim
138 words
An aluminum base liquid rubber precursor formulation adapted for reaction with a second formulation containing isocyanate groups to provide a heat reflective moisture-proof barrier for a substrate, said liquid rubber precursor formulation comprising between about 22 and about 56% by weight of a hydroxyl terminated butadiene polymer, between about 5 and about 30% by weight of a polyether triol having a hydroxyl number of between about 300 and about 500, between about 10 and about 46% by weight particulate aluminum, between about 0.4 and about 6% by weight of a molecular seive dessicant, between about 0.1 and about 1.5% by weight of a mercury catalyst, up to about 4% by weight of a silicon resin, and up to 40% by weight of an organic solvent selected from the group consisting of aromatic solvents, ketones, esters and glycol ethers.
Claim 3
Independent Claim
213 words
A system adapted for the application of heat refelective and moisture-proof barrier to a substrate comprising: a first formulation containing between about 22 and about 56% by weight of a hydroxyl terminated butadiene polymer, between about 5 and about 30% by weight of a polyether triol having a hydroxyl number of between about 300 and about 500, between about 10 and about 46% by weight particulate aluminum, between about about 0.4 and about 6% by weight of a molecular sieve dessicant, between about 0.1 and about 1.5% by weight of a mercury catalyst, up to about 4% by weight of a silicone resin, and up to 40% by weight of an organic solvent selected from the group consisting of aromatic solvents, ketones, esters and glycol ethers; and a second formulation containing a urethane prepolymer derived from a polypropylene glycol ether polyol and toluene diisocyanate containing between about 13 and about 17% by weight free isocyanate groups; the two formulations of said system being adapted to provide a reaction mixture for application to said substrate, said system comprising defined relative proportions of said formulations so as to provide a molar ratio of at least about 1.1 isocyanate groups per hydroxyl group in said reactive mixture at the site of the substrate to be coated.
Claim 4
Independent Claim
213 words
A system adapted for the application of heat refelective and moisture-proof barrier to a substrate comprising: a first formulation containing between about 22 and about 56% by weight of a hydroxyl terminated butadiene polymer, between about 5 and about 30% by weight of a polyether triol having a hydroxyl number of between about 300 and about 500, between about 10 and about 46% by weight particulate aluminum, between about about 0.4 and about 6% by weight of a molecular sieve dessicant, between about 0.1 and about 1.5% by weight of a mercury catalyst, up to about 4% by weight of a silicone resin, and up to 40% by weight of an organic solvent selected from the group consisting of aromatic solvents, ketones, esters and glycol ethers; and a second formulation containing a urethane prepolymer derived from a polypropylene glycol ether polyol and toluene diisocyanate containing between about 13 and about 17% by weight free isocyanate groups; the two formulations of said system being adapted to provide a reaction mixture for application to said substrate, said system comprising defined relative proportions of said formulations so as to provide a molar ratio of at least about 1.1 isocyanate groups per hydroxyl group in said reactive mixture at the site of the substrate to be coated.
References Cited (Backward Citations)
US3714110A
Cited
US3869421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-25 | 1983-09-24 | 1984-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-25 | 1987-09-24 | 1988-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-25 | 1991-09-24 | 1992-03-25 | $7700.00 | Window Closed / Lapsed |